minor refactoring of view resolving code.

framework/yii/base/View.php

@@ -225,8 +225,8 @@ class View extends Component
 	 * on how to specify this parameter.
 	 * @param object $context the context that the view should be used to search the view file. If null,
 	 * existing [[context]] will be used.
-	 * @throws InvalidCallException if [[context]] is required and invalid.
 	 * @return string the view file path. Note that the file may not exist.
+	 * @throws InvalidCallException if [[context]] is required and invalid.
 	 */
 	protected function findViewFile($view, $context = null)
 	{
@@ -236,9 +236,13 @@ class View extends Component
 		} elseif (strncmp($view, '//', 2) === 0) {
 			// e.g. "//layouts/main"
 			$file = Yii::$app->getViewPath() . DIRECTORY_SEPARATOR . ltrim($view, '/');
-		} elseif (strncmp($view, '/', 1) === 0 && Yii::$app->controller !== null) {
+		} elseif (strncmp($view, '/', 1) === 0) {
 			// e.g. "/site/index"
-			$file = Yii::$app->controller->module->getViewPath() . DIRECTORY_SEPARATOR . ltrim($view, '/');
+			if (Yii::$app->controller !== null) {
+				$file = Yii::$app->controller->module->getViewPath() . DIRECTORY_SEPARATOR . ltrim($view, '/');
+			} else {
+				throw new InvalidCallException("Unable to locate view file for view '$view': no active controller.");
+			}
 		} else {
 			// context required
 			if ($context === null) {
@@ -247,7 +251,7 @@ class View extends Component
 			if ($context instanceof ViewContextInterface) {
 				$file = $context->findViewFile($view);
 			} else {
-				throw new InvalidCallException('Current context is not supported.');
+				throw new InvalidCallException("Unable to locate view file for view '$view': no active view context.");
 			}
 		}
 

framework/yii/base/ViewContextInterface.php

@@ -8,13 +8,9 @@
 namespace yii\base;
 
 /**
- * ViewContextInterface represents possible context for the view rendering.
- * It determines the way the non-global view files are searched.
- * This interface introduces method [[findViewFile]], which will be used
- * at [[View::render()]] to determine the file by view name, which does
- * not match default format.
+ * ViewContextInterface is the interface that should implemented by classes who want to support relative view names.
  *
- * @see View
+ * The method [[findViewFile()]] should be implemented to convert a relative view name into a file path.
  *
  * @author Paul Klimov <klimov.paul@gmail.com>
  * @since 2.0
@@ -22,9 +18,9 @@ namespace yii\base;
 interface ViewContextInterface
 {
 	/**
-	 * Finds the view file based on the given view name.
-	 * @param string $view the view name.
+	 * Finds the view file corresponding to the specified relative view name.
+	 * @param string $view a relative view name. The name does NOT start with a slash.
 	 * @return string the view file path. Note that the file may not exist.
 	 */
 	public function findViewFile($view);
-}
+}

framework/yii/base/Widget.php

@@ -8,6 +8,7 @@
 namespace yii\base;
 
 use Yii;
+use ReflectionClass;
 
 /**
  * Widget is the base class for widgets.
@@ -189,8 +190,7 @@ class Widget extends Component implements ViewContextInterface
 	 */
 	public function getViewPath()
 	{
-		$className = get_class($this);
-		$class = new \ReflectionClass($className);
+		$class = new ReflectionClass($this);
 		return dirname($class->getFileName()) . DIRECTORY_SEPARATOR . 'views';
 	}
 
@@ -202,6 +202,6 @@ class Widget extends Component implements ViewContextInterface
 	 */
 	public function findViewFile($view)
 	{
-		return $this->getViewPath() . DIRECTORY_SEPARATOR . ltrim($view, '/');
+		return $this->getViewPath() . DIRECTORY_SEPARATOR . $view;
 	}
 }